I've been banging my head trying to get this done, I have a partial solution and it works by having an unload button on stage which I cannot have. What I need is a variable or another set of event listeners for the existing buttons that will remove any stream "unloadandStop" BEFORE ANY btn function that calls the next swf.

THE STREAM IS GENERATED BY AN INSTANCE OF SLIDESHOW PRO IN THE EXTERNAL SWFS NOT THE.FLV PLAYER